4. Stan and Anne were divorced in January 2016. The provisions of the divorce decree and Anne's obligations have not been changed since the original agreement and are as follows: Anne is to make the mortgage payments for 20 years regardless of how long Stan lives. Anne paid $9,870 in 2020 on the mortgage. Anne is to pay Stan $1,800 per month for 10 years or until Stan dies. Of this amount, $620 is designated as child support. Anne made all payments as required in 2020. What would the effect of each of these payments be on the AGI of Anne and Stan in 2020-be specific in the amount? 5. If a married couple who files jointly has taxable income of $164,735 in 2020 with no capital gains nor qualified dividends nor tax credits, what is their income tax liability for 2020.